10d and 28-135 IS

[zzpza]

i have a recurring problem when using the above combination. unfortunately i can't find an image to highlight the problem as i always deleted them. i'll post a link to the next one i find.

the problem i'm getting is where the foreground and background are in focus, but most of the midground isn't. it's usually on the right hand side of the pic, but not always. it's very annoying and due to the general loss of contrast when it happens i'm thinking it's an internal reflection problem. :( i use the 28-135 IS on my EOS 3 and EOS 30 fine with no problems what-so-ever. i also use other lenses on the 10d with no problem either (20mm prime, 12-24mm zoom, 50mm prime). the problem seems independant of weather i use the lens hood or not. it doesn't happen all the time, but when it does it will be several shots in a row in similar lighting conditions. to begin with i thought it was rain on the lens (i live in england - it rains a lot here).

has anyone has similar problems / heard of this before?

tia,
j.

[lomond]

It's difficult to say without an image bit it does sound like stray light (flare).

It may not happen on the film based cameras due to the smaller sensor of the 10D, ie not full frame.
Some lens hoods are not that good when it comes to less than full frame sensors.

Sorry, it's all I can think of without an image.

[scottbergerphoto]

There have been reports over at www.robgalbraith.com, in the Canon Forums of weird things happening on only 1/2 of a picture. I don't remember if it was a lens or a sensor problem. Happy searching!
Scott

[zzpza]

It's difficult to say without an image bit it does sound like stray light (flare).

It may not happen on the film based cameras due to the smaller sensor of the 10D, ie not full frame.
Some lens hoods are not that good when it comes to less than full frame sensors.

Sorry, it's all I can think of without an image.

yes, it's difficult without an image. :( i spent a good four hours last night searching for an example, but i seem to have deleted them all.

to add to what i said before, it's not the stereotypical flare you see from bright light sources being in frame. no multicoloured halos, just the loss of contrast (which is indicative of stray light) and loss of focus.

There have been reports over at www.robgalbraith.com (http://www.robgalbraith.com/), in the Canon Forums of weird things happening on only 1/2 of a picture. I don't remember if it was a lens or a sensor problem. Happy searching!
Scott

i do now get the vauge recollection of someone mentioning problems with light at a shallow angle from parallel to the LPF being reflected.

tia,
jules.